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cheat on

Idioms  
  1. Be sexually unfaithful to, as in They broke up right after she found he was cheating on her. [Colloquial; 1920s]


Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Manchester City footballer Ruben Dias has confirmed his break-up with Love Island presenter Maya Jama, but insisted he did not cheat on her during their relationship.

From BBC • May 30, 2026

Though her professors warned against using it to cheat on assignments, she wasn’t tempted.

From The Wall Street Journal • May 26, 2026

Clear-eyed hindsight shows that Sullivan didn’t deliberately cheat on her boyfriend, though.

From Salon • Feb. 20, 2026

“I don’t know what he was using them for, but he has been known for trying to cheat on schoolwork and stuff,” she said.

From Slate • Feb. 12, 2026

No one is allowed to talk to each other until after the interviews are completed, which really makes no sense because this doesn’t strike me as the type of thing you could cheat on.

From "Dumplin'" by Julie Murphy

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